METHOD FOR ADDING TITANIUM INTO MOLTEN STEEL AND TITANIUM ADDITIVE

• Main Authors: YAMAGUCHI KIMIHARU, BESSHO NAGAYASU
• Format: Patent
• Language: English
• Published: 13.02.2001
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

PROBLEM TO BE SOLVED: To charge an inexpensive titanium oxide-containing material into molten steel and to efficiently add titanium by mixing the titanium oxide- containing material, metal aluminum-containing material and calcium oxide or calcium hydroxide-containing material and thereafter, charging the mixture into the molten steel or slag thereon. SOLUTION: The material formed by mixing is desirable to contain 20-80 mass % titanium oxide, 10-40 mass % metal aluminum, 10-40 mass % calcium oxide or calcium hydroxide in terms of calcium oxide and press-formed into the bulky state. Titanium ore is suitable for the titanium oxide-containing material and crushed waste of aluminum can scrap, aluminum cut waste or aluminum refining slag at suitable for the metal aluminum-containing material. Since the inexpensive titanium source containing titanium oxide, is used and also, the reducing agent of titanium oxide together with the other material are mixed and charged into the molten steel, the addition of the titanium can inexpensively and efficiently be executed and the producing cost of the titanium-containing molten steel is drastically reduced.